18024421168 has 20 divisors (see below), whose sum is σ = 37608648448. Its totient is φ = 8318963520.

The previous prime is 18024421153. The next prime is 18024421211. The reversal of 18024421168 is 86112442081.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43327728 + ... + 43328143.

Almost surely, 2^18024421168 is an apocalyptic number.

It is an amenable number.

18024421168 is an abundant number, since it is smaller than the sum of its proper divisors (19584227280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18024421168 is a wasteful number, since it uses less digits than its factorization.

18024421168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86655892 (or 86655886 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 18024421168 in words is "eighteen billion, twenty-four million, four hundred twenty-one thousand, one hundred sixty-eight".